What is the function of a drop tank?
A drop tank is a streamlined fuel tank attached to a hard poont on the aircraft, usually under the wings. It is attached to the aircraft’s fuel system by a quick connect and designed to be easily separated from the aircraft when required. It is used to provide extra range when in flight refueling is not feasible. The need to remove or lower a gas tank from an automobile is very uncommon, but there are a few instances where it may be necessary to drop the gas tank. Components like an internal fuel pump, the fuel gauge sensor, or fuel lines and electric wires may need to be serviced, replaced, or repaired.